Purinsesu Toyotomi plot
National Audit Bureau members Hajime Matsudaira (Shinichi Tsutsumi), Tadako Torii (Haruka Ayase) & Asahi Gainsbourg travel from Tokyo to Osaka to verify that federal grants in Osaka are being spent for the right purposes and to detect financial malpractice. Everything is running smoothly until the HRH Foundation, an organization that maintains Osaka's castles, is inspected. The inspection is running smoothly, but when Hajime returns a few hours later to retrieve his lost cell phone, the entire HRH Foundation office, at first buzzing with employees, turns out to be completely empty! Hajime informs his colleagues and it soon becomes apparent that all of Osaka has been hiding a secret for four hundred years.